html {
  height: 100%;
  font-family: "幼圆";
}

body {
  height: 100%;
  margin: 0;
  background-color: #2a3341;
  display: grid;
  grid-template-rows: 60px 1fr;
  grid-template-columns: 400px 1fr 400px;
  grid-template-areas: "a a a"
                       "b c d";
  color: rgb(225, 225, 255);
}

div {
  box-sizing: border-box;
}

.top {
  grid-area: a;
}

.left {
  grid-area: b;
}

.center {
  grid-area: c;
  padding: 10px 0px 10px 0px;
}

.right {
  grid-area: d;
}

